Aluminium oxide
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| Names | |
|---|---|
| IUPAC name
dialuminum;oxygen(2-)
| |
| Systematic IUPAC name
Aluminium oxide | |
| Properties | |
| Al2O3 | |
| Appearance | white solid |
| Density | 3.95–4.1 g/cm3 |
| Melting point | 2,072 °C (3,762 °F; 2,345 K) |
| Boiling point | 2,977 °C (5,391 °F; 3,250 K) |
| insoluble | |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Aluminium oxide is chemical compound of aluminum and oxygen with chemical formula Al2O3, its most common of several aluminium oxides. Aluminium oxide occurs naturally in it's crystalline alpha phase as mineral corundum.
Contents
Properties
Chemical
Physical
Aluminium oxide is very hard solid (9 Mohs scale). It's electrical insulator.
Availability
Aluminium oxide is often present in sandpapers, you can also buy it from mineral collectors as corrundum or gemstones like ruby or saphire.
Preparation
Aluminium oxide is a product of thermite reaction: M2O3 + 2Al → Al2O3 + 2M
